Bitcoin Forum
February 25, 2018, 10:36:57 AM *
News: Latest stable version of Bitcoin Core: 0.15.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: IEC cord Rating for 1 Antminer S9 with APW3++ 220v 50hz  (Read 344 times)
iamrohitkgupta
Jr. Member
*
Offline Offline

Activity: 48
Merit: 0


View Profile
November 15, 2017, 07:07:17 AM
 #1

I have a 10 amp IEC cord connected to the PSU but it gets hot. I don't have an instrument to read the temperature.
Shouldn't 10 amps be enough at 200v?
Cable is thin though, 0.75 mm².
I don't see any darkening in the cable. Should i be worried?
1519555017
Hero Member
*
Offline Offline

Posts: 1519555017

View Profile Personal Message (Offline)

Ignore
1519555017
Reply with quote  #2

1519555017
Report to moderator
1519555017
Hero Member
*
Offline Offline

Posts: 1519555017

View Profile Personal Message (Offline)

Ignore
1519555017
Reply with quote  #2

1519555017
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1519555017
Hero Member
*
Offline Offline

Posts: 1519555017

View Profile Personal Message (Offline)

Ignore
1519555017
Reply with quote  #2

1519555017
Report to moderator
T-Gee05
Member
**
Offline Offline

Activity: 97
Merit: 10


View Profile
November 15, 2017, 07:39:24 AM
 #2

For S9, the power consumption is 1323W (13.5TH/s batch).. say 1400W. At 220V supply, load current is 6.4A plus 10% at the wall for efficiency.. so around 7.1A.

Wire size should be 1.5mm2 as per NEC wire sizing for 7.1A load. That makes your wire undersize for your load if it is only 0.75mm2 that is why it gets hot.

Better get thicker wire size to match your load current and that is 1.5mm2 to be safe.

iamrohitkgupta
Jr. Member
*
Offline Offline

Activity: 48
Merit: 0


View Profile
November 15, 2017, 12:08:28 PM
 #3

For S9, the power consumption is 1323W (13.5TH/s batch).. say 1400W. At 220V supply, load current is 6.4A plus 10% at the wall for efficiency.. so around 7.1A.

Wire size should be 1.5mm2 as per NEC wire sizing for 7.1A load. That makes your wire undersize for your load if it is only 0.75mm2 that is why it gets hot.

Better get thicker wire size to match your load current and that is 1.5mm2 to be safe.


Okay. Thanks. Im gonna search the local computer hardware store.
Can you give any brand recommendations? I live in India.
T-Gee05
Member
**
Offline Offline

Activity: 97
Merit: 10


View Profile
November 16, 2017, 03:08:22 AM
 #4

For S9, the power consumption is 1323W (13.5TH/s batch).. say 1400W. At 220V supply, load current is 6.4A plus 10% at the wall for efficiency.. so around 7.1A.

Wire size should be 1.5mm2 as per NEC wire sizing for 7.1A load. That makes your wire undersize for your load if it is only 0.75mm2 that is why it gets hot.

Better get thicker wire size to match your load current and that is 1.5mm2 to be safe.


Okay. Thanks. Im gonna search the local computer hardware store.
Can you give any brand recommendations? I live in India.

Im not familiar with the brands you have there but it is similar to this specs

https://www.amazon.com/Omnigates-Power-14AWG-5-15P-Connector/dp/B01DS79UU2/ref=sr_1_16?s=electronics&ie=UTF8&qid=1510800963&sr=1-16&keywords=power+cord++250v+14awg+15a
NotFuzzyWarm
Legendary
*
Offline Offline

Activity: 1358
Merit: 1002


Evil beware: We have waffles!


View Profile
November 16, 2017, 03:45:57 AM
 #5

Given how very thin power cords are India, Asia, and many other countries best you can look at is the current (amps) rating.

Be very aware a cord's rating is the maximum amount of current that can be safely used FOR A SHORT PERIOD OF TIME not with a constant load. You never ever want to push a cord to max for long periods of time. As you have found out - they get hot.

For loads running 24x7 like miners preferably a cord should be rated for 2x what a miner draws.

Any cord powering miners like the s9 or Avalons need cords rated for at least 13 amps, 15 is better.

-Joshua Zipkin aka Joshua Alexander leaked AMT A1 miner skype chats http://bit.ly/1Qjt6lj
-For bitcoin to succeed the community must police itself.
-Support Sidehacks miner development. Donations to:   1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
iamrohitkgupta
Jr. Member
*
Offline Offline

Activity: 48
Merit: 0


View Profile
November 16, 2017, 09:05:59 PM
 #6

Thank you, guys!
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!