Confusing compressors - Page 2

Vanbursta · 9th December 2018, 11:49

Quote:

Originally Posted by macafee2

sorry I think that is a bit misleading. With 240v, 3hp I think is the maximum motor size due to start up consumption. Mine has two 3hp motors and works from 240v. One motor starts and then a few seconds later the second motor starts, my compressor is 270 litres.
whilst what you say may be correct for a 3 pin plug and socket, change the plug and socket to a different type and you can run a bigger compressor

macafee2

My apologies I should of been clearer, that's why I said a standard 13 amp socket (3 pin plug type), if you change to 3 phase it's a different kettle of fish, also I was unaware that you can install a different plug and socket arrangement, as I thought it was illegal to break into the ring main unless you are a fully qualified sparky. I was saying that that is the largest you can go without making any adaptions to the wiring.

humphshumphs · 10th December 2018, 15:58

If you have a 'commando' style of plug/socket arrangement (the blue round ones), then they have a capacity of 16amp, but these aren't fused, so they should be on a dedicated circuit with breaker to suit. Not normally used in domestic setups.

You can run twin 3hp as long as it has delayed sequential starting (if you try to start both at the same time, you'll trip the breaker)

10th December 2018, 15:58	#12
humphshumphs I really should get out more....... No longer a Rover Owner Join Date: Jan 2011 Location: As far east as you can go in the UK and not get wet feet. Posts: 2,273 Thanks: 404 Thanked 309 Times in 246 Posts	If you have a 'commando' style of plug/socket arrangement (the blue round ones), then they have a capacity of 16amp, but these aren't fused, so they should be on a dedicated circuit with breaker to suit. Not normally used in domestic setups. You can run twin 3hp as long as it has delayed sequential starting (if you try to start both at the same time, you'll trip the breaker) __________________ Richard. No longer a 75 owner as my tourer made it to the moon, and died on it's way back. But 1/4 million miles ain't bad.