I don't understand whether I need to use hyphenation in "high-voltage". In scientific literature I see it being used interchangeably. Could anyone help me with this?
Here are some examples (I didn't use hyphens since I don't know if they should be there):
- "High voltage equipment was used in the experiment".
- "High voltage pulse is generated by neon-sign transformer."
- "High voltage is necessary to cause dielectric breakdown."