Male client has irritation on leg after NBE treatment. Is this due to hairy legs?

The plates were neither too tight nor too loose but the hairs on his leg led slightly and then caused a burn. 
Advice for hairs on legs: put the plates in the back then. 
What is the essential difference if we put the plates on the back say 3 and then 1 active plate on the belly and work with two heads? 
Except that you then don't do full automatic lymph drainage with 3 but only on the abdomen is there any difference?

I notice that a number of things have taken on a life of their own including: 
1.    Placement of electrodes. 
There is no need to attach the plates to the legs and consequently, there is no need for customers to remove their trousers.   
In a facial treatment, for example, I see optimal effect with the plates on the shoulder blades and possibly lumbar.

2.    Setting at 100 % 
I know that with capacitive operation, there is a delay.  This is extremely safe and just prevents burning.  
However, why working at 100 per cent I do not understand.   This is totally useless in most cases.  Plates that are a long distance apart can be set a little higher (± 80 %) and plates that are closer together a little lower (± 35-55 %). As you know, there is also a distinction between people with dehydrated skin and those with moisture-rich skin.    
Always set in accordance with the person being treated; it should always feel particularly pleasant and soothing.   
Anything against the pain threshold is set too high.   
It is better to work more slowly at a lower intensity.  We should definitely take this into account.