Web Host Chat - The UK's host forum since 2001!
RECOMMENDED HOSTS
Colocation Rack Services
UK Web & Reseller Hosting
UK Leased Lines
VMWare Cloud Servers
Advertise here!
Page 2 of 2 FirstFirst 12
Results 16 to 29 of 29
  1. #16
    looks like 06.1 / 0.6

  2. #17
    Posts 5302
    Post rank 83 (-50)
    Array
    I've had times when I've thought aha, clamp meter is spot on and then the same clamp meter used in exactly the same way gives a wildly different reading.

    I know of a DC that gives you power readings based on clamp meters... they once said "we need to talk to you as you are pulling 32 amps in cab XXX". It transpired they were using a clamp meter and it was nothing of the sort... around 12 amps. To this day they still use clamp meters for all readings I believe :-S
    Mark Castle

  3. #18
    91 rating
    4 reviews
    Posts 7974
    Post rank 12 (-10)
    Array
    Quote Originally Posted by Peter_connetu View Post
    looks like 06.1 / 0.6
    It wasn't - it is 0.61 and 000.6 respectively
    Peter Knapp - CCS Leeds Ltd - www.ccsleeds.co.uk
    Coal Road, Leeds. LS14 2AQ / Co. reg: 03507910 / VAT reg: GB 698 2027 05 / Tel: 0113 294 66 99
    UK Leased Lines | Hosted VoIP & SIP Trunks | EFM - Ethernet First Mile
    Free Install and Cisco Router on Fully Managed EFM at up to 20Mb/s only 300 per month

  4. #19
    91 rating
    4 reviews
    Posts 7974
    Post rank 12 (-10)
    Array
    Quote Originally Posted by markcastle View Post
    I've had times when I've thought aha, clamp meter is spot on and then the same clamp meter used in exactly the same way gives a wildly different reading.

    I know of a DC that gives you power readings based on clamp meters... they once said "we need to talk to you as you are pulling 32 amps in cab XXX". It transpired they were using a clamp meter and it was nothing of the sort... around 12 amps. To this day they still use clamp meters for all readings I believe :-S
    Full racks are measured at the breakers on the DIS board - we don't use multi-core clamp meters for these. I agree, they aren't 100% but they are a start for 10 when you can't disconnect a server...
    Peter Knapp - CCS Leeds Ltd - www.ccsleeds.co.uk
    Coal Road, Leeds. LS14 2AQ / Co. reg: 03507910 / VAT reg: GB 698 2027 05 / Tel: 0113 294 66 99
    UK Leased Lines | Hosted VoIP & SIP Trunks | EFM - Ethernet First Mile
    Free Install and Cisco Router on Fully Managed EFM at up to 20Mb/s only 300 per month

  5. #20
    It wasn't - it is 0.61 and 000.6 respectively
    apologies that's what I meant...

  6. #21
    Posts 595
    Post rank 41 (58)
    Array
    I've always hated clampers!
    OSHS Services - DNS Clusters | R1Soft Licenses | Remote Backup Storage | R1Soft CDP Storage | Cheap Dedicated Servers
    EconDC.com - Enterprise UK Server Colo & Rack Space at Lowest Prices

  7. #22
    53 rating
    3 reviews
    Posts 904
    Post rank 86 (12)
    Array
    Quote Originally Posted by suhailc View Post
    I've always hated clampers!
    Stay away from those Double Yellow Lines

  8. #23
    579 rating
    1 review
    Posts 59
    Post rank 17876 (-11)
    Array
    P=IV
    kw = AmpsxVoltage

  9. #24
    Posts 4
    Post rank 20124 (-11)
    Array
    If you can access the wires before the go in the outlet, like the j-box or something, you can clamp the "hot" wire.

  10. #25
    Platinum Member
    Host Consult (Not Certified)
    Posts 6218
    Post rank 61 (-5)
    Array
    Already been said above chap

  11. #26
    601 rating
    4 reviews
    Posts 2471
    Post rank 5 (2)
    Array
    As an aside... for anyone looking to do this in offices or retro fit to your data centre have a chat with MeasureMyEnergy

    Run by someone who understands our industry quite acutely!

  12. #27
    I'm a Newbie
    Posts 3
    Post rank 20247 (-15)
    Array
    For those interested we had a custom horizontal PDU designed for us by a local manufacture it has 48 x C13 sockets max input of 32 amp single phase 240v.

    Each c13 socket within the PDU is metered with power consumption data stored in flash memory on the PDU which can be accessed via a web interface or API directly.

    We poll each socket every 3 seconds and bill the customer in kwh for actual power consumed.

    We also monitor each single phase breaker within the distribution board via branch monitoring and breaker monitoring on any 3 phase breaker.

    edited.. that would teach me to be on the internet late Friday night... and not re read what i type...

    Kindest Regards
    James
    Last edited by micron21; 4th July 2014 at 12:34 PM.

  13. #28
    132 rating
    23 reviews
    Posts 13826
    Post rank 1 (0)
    Array
    Quote Originally Posted by micron21 View Post
    For those interested we had a customer horizontal PDU designed for us it has 48 x C13 sockets on it total 32 amp single phase 240v with each c13 socket metered with data stored in flash memory on the PDU along with web interface and API.
    We poll each socket every 3 seconds and bill the customer in kwh for actual power consumed. If anyone
    We also monitor each single phase breaker within the distribution board via branch monitoring and breaker monitoring on any 3 phase breaker.

    Kindest Regards
    James
    Sounds like a nice PDU.

    Did part of one of the sentences go missing BTW?
    Freethought Internet
    Freethought Internet Limited registered in London No. 5862996. Registered office: The Old Church Hall, 2A Cromwell Street, Lincoln, LN2 5LP. VAT number GB 987 0952 66.

  14. #29
    I'm a Newbie
    Posts 3
    Post rank 20247 (-15)
    Array
    thanks for the heads up... all fixed ;-)

Page 2 of 2 FirstFirst 12

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Content Relevant URLs by vBSEO 3.6.1