Electric Heating Load Rating

mikilianis · 01-Apr-09, 08:29 PM

Hi all a unusual query landed in my inbox this morning a electric heating system is rated 6kw now it is supplied via a 3 phase supply is it 6kw per phase or as in a 3 phase motor is it total load 6 kw in other words is it 2kw per phase or6 kw per phase I asked them to check the amperage rating but agai is it collective amps or amps per phase lets have some answers
thanks
Mike

duncan drennan · 01-Apr-09, 10:33 PM

Typically motor ratings would be for the entire motor, i.e. 6kW total power consumed (not 6kW per phase).

Dave A · 02-Apr-09, 09:22 AM

The power rating should be for the unit on which the power rating is being given.

As an aside: this raised an interesting discussion at the office on the consequences of a phase going down i.r.o. motors vs heaters.

01-Apr-09, 08:29 PM	#1
mikilianis Email problem Join Date: Dec 2008 Location: Cape Town South Africa Posts: 21 Thanks: 31 Thanked 2 Times in 2 Posts Rep Power: 0	Electric Heating Load Rating Hi all a unusual query landed in my inbox this morning a electric heating system is rated 6kw now it is supplied via a 3 phase supply is it 6kw per phase or as in a 3 phase motor is it total load 6 kw in other words is it 2kw per phase or6 kw per phase I asked them to check the amperage rating but agai is it collective amps or amps per phase lets have some answers thanks Mike

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
TFSA google rating	garthu	Technology Forum	8	18-Feb-09 09:46 AM
The economic consequences of load shedding	Dave A	Electrical Load Shedding Forum	46	29-Apr-08 11:04 PM
And the lights go out again.	Dave A	Electrical Load Shedding Forum	71	25-Feb-08 04:38 PM
Just how efficient is load shedding really?	Dave A	Electrical Load Shedding Forum	5	23-Jan-08 09:46 AM
New: Electrical load shedding discussion forum added.	Dave A	News Archive	0	21-Jan-08 03:26 PM

01-Apr-09, 10:33 PM	#2
duncan drennan just me Join Date: Jun 2006 Location: Cape Town Posts: 2,609 Thanks: 102 Thanked 89 Times in 74 Posts Rep Power: 10	Typically motor ratings would be for the entire motor, i.e. 6kW total power consumed (not 6kW per phase).

02-Apr-09, 09:22 AM	#3
Dave A Site Caretaker Join Date: May 2006 Location: Durban, South Africa Posts: 10,144 Thanks: 970 Thanked 695 Times in 608 Posts Rep Power: 28	The power rating should be for the unit on which the power rating is being given. As an aside: this raised an interesting discussion at the office on the consequences of a phase going down i.r.o. motors vs heaters.

Electric Heating Load Rating

Hi all a unusual query landed in my inbox this morning a electric heating system is rated 6kw now it is supplied via a 3 phase supply is it 6kw per...